Trypophobia is an aversion to the sight of irregular patterns or clusters of small holes or bumps. It is not officially recognized as a mental disorder, but may be diagnosed as a specific phobia if excessive fear and distress occur. People may express only disgust to trypophobic imagery. Copied from google

People that chew nail, question, do you always wash your hands before chewing ?Ebuka does that too, (On The Spot) after a hand shake with guest, touching the Couch and everywhere the next he will be chewing on his nails.